750 GPD

The Whirlwind STA60N Septic Air Pump is one of the highest quality, reliable septic air pumps on the market today! Built with oversized diaphrams and a shuttle for long service life ensuring excellent performance making it one of the best available. Used in some 500 GPD treatment systems, pond aeration, etc. MOST 500 GPD treatment systems use the Whirlwind STA80N.